149999915 has 16 divisors (see below), whose sum is σ = 197029056. Its totient is φ = 108950400.

The previous prime is 149999909. The next prime is 149999957. The reversal of 149999915 is 519999941.

It is not a de Polignac number, because 149999915 - 2¹² = 149995819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14951 + ... + 22880.

It is an arithmetic number, because the mean of its divisors is an integer number (12314316).

Almost surely, 2^149999915 is an apocalyptic number.

149999915 is a deficient number, since it is larger than the sum of its proper divisors (47029141).

149999915 is a wasteful number, since it uses less digits than its factorization.

149999915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37910.

The product of its digits is 1180980, while the sum is 56.

The square root of 149999915 is about 12247.4452438049. The cubic root of 149999915 is about 531.3291842291.

The spelling of 149999915 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred fifteen".